NBR Foam Rubber Sheet

12/18/20235 min read

Closed Cell Foam

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Environment-Friendly Rubber Foam Thermal Insualtion Material

Universal Insulation Rubber Foam

Polymer Elastic Low-Temperature Cold Insulation System

So,What is NBR rubber?

Nitrile rubber, commonly known as NBR, Buna-N, or acrylonitrile butadiene rubber, represents a synthetic rubber copolymer derived from the combination of acrylonitrile (ACN) and butadiene. The physical and chemical properties of this synthetic rubber exhibit variability contingent upon the nitrile polymer composition, with a unique feature of being inherently resistant to oil, fuel, and various chemicals. The higher the nitrile content in the polymer, the greater its resistance to oils, albeit at the expense of reduced material flexibility.

Widely regarded as the premier elastomer in the seal industry, Nitrile finds extensive applications in automotive and aeronautical sectors, where it is utilized for crafting fuel and oil handling hoses, seals, grommets, and self-sealing fuel tanks—applications where conventional rubbers would be unsuitable. NBR's capacity to endure temperatures ranging from -40 to 108 °C (-40 to 226 °F) positions it as an ideal material for aeronautical uses. Beyond its role in seals, Nitrile butadiene serves diverse purposes, including the fabrication of molded goods, footwear, adhesives, sealants, sponges, expanded foams, and floor mats.

The versatility of nitrile rubber extends to various products such as disposable non-latex gloves, automotive transmission belts, hoses, O-rings, gaskets, oil seals, V belts, static and dynamic hydraulic seals, synthetic leather, printer's form rollers, and cable jacketing. Additionally, NBR latex contributes to adhesive formulations and serves as a pigment binder. The ubiquity of NBR across industries underscores its indispensable role in providing resilience, chemical resistance, and durability across a spectrum of applications.

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9 Properties of Nitrile (NBR) Rubber：

Oil Resistance:
- NBR is highly resistant to oils and hydrocarbons, making it an ideal material for applications involving exposure to oil and fuel. This property is particularly valuable in the automotive and aeronautical industries for manufacturing seals, gaskets, and hoses.
Chemical Resistance:
- NBR rubber demonstrates good resistance to a wide range of chemicals, including acids and alkalis. This chemical resistance contributes to its durability in diverse industrial environments.
Temperature Range:
- NBR can withstand a broad temperature range, typically from -40 to 108 °C (-40 to 226 °F). This makes it suitable for applications where temperature fluctuations are common, such as in automotive engines or aeronautical systems.
Flexibility:
- While the flexibility of NBR depends on its specific polymer composition, it generally offers good flexibility for rubber material. However, as the nitrile content increases, flexibility may decrease, especially when compared to some other elastomers.
Weather Resistance:
- NBR rubber exhibits reasonable resistance to weathering and ozone, enhancing its suitability for outdoor applications where exposure to sunlight and environmental conditions is a consideration.
Compression Set Resistance:
- NBR has good compression set resistance, meaning it can maintain its shape and sealing properties even after prolonged compression. This makes it effective for use in sealing applications.
Tensile Strength and Tear Resistance:
- NBR typically has good tensile strength, contributing to its overall durability. It also exhibits decent tear resistance, ensuring its integrity in the face of mechanical stress.
Flame Resistance:
- Depending on the specific formulation, NBR can offer some level of flame resistance, contributing to its use in certain applications where fire safety is a concern.
Electrical Insulation:
- NBR can provide effective electrical insulation, making it suitable for applications in the electrical and electronics industries.

And then,What is HNBR?

Hydrogenated nitrile butadiene rubber (HNBR), alternatively known as highly saturated nitrile (HSN), is renowned for its exceptional physical strength and the ability to maintain its properties even after prolonged exposure to elevated temperatures, oils, and chemicals. Particularly prevalent in automotive engineering, one of its primary applications is in the manufacturing of O-rings utilized in air-conditioning systems.

HNBR compounds, contingent upon filler selection and loading, typically boast tensile strengths ranging from 20 to 31 MPa when measured at 23°C. The versatility of compounding techniques allows HNBR to operate effectively across a broad temperature spectrum, enduring conditions from -40 °C to 165 °C with minimal degradation over extended periods. For optimal low-temperature performance, it is advisable to opt for low acrylonitrile (ACN) grades, while achieving high-temperature resilience involves employing highly saturated HNBR grades with white fillers.

As a collective group, HNBR elastomers exhibit outstanding resistance to commonly encountered automotive fluids such as engine oil, coolant, fuel, and a plethora of industrial chemicals. Analogous to standard nitrile rubber (NBR), the fluid and chemical resistance of HNBR improve with an increased acrylonitrile content.

The distinctive properties and elevated temperature resilience associated with HNBR, in comparison to NBR, have led to its widespread adoption in diverse sectors, including automotive, industrial, and applications with stringent performance requirements. Notably, the automotive industry stands out as the primary consumer, incorporating HNBR in a wide array of dynamic and static seals, hoses, and belts. Moreover, HNBR has found extensive use in industrial sealing applications related to oil field exploration and processing, as well as in the manufacturing of rollers for steel and paper mills. The broad utility and robust performance of HNBR underscore its significance in meeting the demanding requirements of various industrial applications.

SHENZHOU® NBR FOAM RUBBER

Shenzhou® Rubber Foam Insulation products represent a pinnacle in innovation, integrating cutting-edge foreign technology and advanced processes. At the core of these exceptional insulation materials is the utilization of high-performance NBR as the primary raw material. Employing an environmentally friendly foaming agent and leveraging the proprietary "Vacuum Microcrystalline Foaming Technique" (VMFT) developed by Shenzhou, the insulation undergoes a meticulous process of micro foaming, ensuring dense vesicles and a high closure rate.

Distinguished for its high flame retardancy, the insulation effectively mitigates condensation issues, thereby enhancing energy efficiency. Additionally, it boasts superior mold resistance, aligning with stringent safety and environmental protection standards. Shenzhou's commitment to delivering high-performance products is exemplified through the entire product lifecycle – from raw material intake, manufacturing processes, to product dispatch and post-sales tracking. The entire journey is monitored by the AAAA quality supervision and control system, guaranteeing the consistent and excellent quality of our insulation products.

How can i get SHENZHOU® NBR FOAM RUBBER？

Innovating for designers, manufacturers, and supply chain managers, SHENZHOU® offers a pioneering NBR rubber foam product that not only ensures superior consistency but also minimizes energy consumption, elevates production efficiency, upholds eco-friendly practices, and is fully customizable to meet diverse and unique requirements. The result is a testament to SHENZHOU®'s commitment to delivering a cutting-edge solution that transcends industry standards and brings unprecedented flexibility and efficiency to the production and customization of NBR rubber foam products.Contact us,please!